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Hi Guys,
I'm a newbie, looking for some help.
-. I've got a switch that I would like to replace to a relay. What relay should I be looking for or buy? The switch control power to 2 fans and a DC Motor 12V (in the Filastruder Setup). I would like to use the output port of an industrial controller (24Vdc) for it. How do I go about it?
-. The idea is to control the switching On/Off of the Motor and Fans using the output port.
so you want to 24 volt s to run two 12 volt fans . why not just wire them in series ?
Hi Guys,
I'm a newbie, looking for some help.
-. I've got a switch that I would like to replace to a relay. What relay should I be looking for or buy? The switch control power to 2 fans and a DC Motor 12V (in the Filastruder Setup). I would like to use the output port of an industrial controller (24Vdc) for it. How do I go about it?
-. The idea is to control the switching On/Off of the Motor and Fans using the output port.
So if I understand correctly you want to control 3 twelve volt devices with a relay so they come on and go off at the same time based on the commands from the controller? The controller has a 24 volt output on the control line?
If that is the case then you just need a relay that is SPST meaning one common contact and one switched contact. You probably want normally open so that when the control signal is off the three devices are off. The only other requirements are to make sure the coil can handle 24 volts and the contacts can handle the 12 volts all you need to do is add up the current the motor and fans require and make sure the relay contacts can handle that current as well.
Hi Guys,
-. Yes, I want to control a motor and 2 fans through a relay. Both the Fans and the Motor are 12V. The control Line is 24V from the I/O Module of an industrial controller. I have attached a pic of the circuit diagram. It is the switch "SW2-Motor/Fan", that I want to replace with a relay. The Industrial Controller is the IRC5 Cabinet - Robot Controller from ABB. It's I/O Module is 24V.
-. From what I read online. Relays are used to control High Power devices using Low Power devices. In my case, its High Device to control Low Power device. Does this change anything? Can I still use a Relay?
-. It would be nice, if you could point me to a specific relay Model that would work/ do the job.
Hi Guys,
-. Yes, I want to control a motor and 2 fans through a relay. Both the Fans and the Motor are 12V. The control Line is 24V from the I/O Module of an industrial controller. I have attached a pic of the circuit diagram. It is the switch "SW2-Motor/Fan", that I want to replace with a relay. The Industrial Controller is the IRC5 Cabinet - Robot Controller from ABB. It's I/O Module is 24V.
-. From what I read online. Relays are used to control High Power devices using Low Power devices. In my case, its High Device to control Low Power device. Does this change anything? Can I still use a Relay?
-. It would be nice, if you could point me to a specific relay Model that would work/ do the job.
Tell me the max current that motor is using and I will tell you the correct relay and give you a diagram. The max current is our only missing and needed data.
Hi carl_m1968,
Thank you for the replies.
-. I'm not sure, how to confirm this. I've linked the Setup doc for the Product ( Revision 2.1c - ... 3009-Present). According to this, The Stall Protection board you see in the diagram is supposed to limit the current to max between 1.5-1.7 A. The board has 2 trimpots, to set the limits for V, A. The V trimpot is set to limit: none, while the A trimpot is set to limit the current to: 1.5 - 1.7A. Here's a forum link, that may explain it better.
http://www.soliforum.com/topic/16034/st … questions/
Setup Doc Link:
http://www.soliforum.com/topic/2036/fil … stl-files/
-. Is this helpful?
Hi carl_m1968,
Thank you for the replies.-. I'm not sure, how to confirm this. I've linked the Setup doc for the Product ( Revision 2.1c - ... 3009-Present). According to this, The Stall Protection board you see in the diagram is supposed to limit the current to max between 1.5-1.7 A. The board has 2 trimpots, to set the limits for V, A. The V trimpot is set to limit: none, while the A trimpot is set to limit the current to: 1.5 - 1.7A. Here's a forum link, that may explain it better.
http://www.soliforum.com/topic/16034/st … questions/
Setup Doc Link:
http://www.soliforum.com/topic/2036/fil … stl-files/-. Is this helpful?
So I found a relay to suit your needs. It is an automotive relay but for a 24 volt system such as a forklift. The basic requirements for the relay is a 24 volt coil, contacts that can handle 5 amps and at least 15 volts. This relay has contacts that can 24 volts and many more amps. So it will be fine. You are welcome to source other as long as they meet the minimum requirements. You will also need a 1N4007 placed in parallel wit the relays coil to protect your controller from the back EMF of the coil when the coil is de-energized. I did not include that in my diagram as it could be simply placed in series with the controller connection to the relay. You just want to block the back EMF from getting back to the controller as it could damage it.
https://www.digikey.com/product-detail/ … ND/5341752
I have included a diagram that is simplified and I hope it makes sense to you. I excluded all the stuff not relevant to the control circuit for simplicity. If you have questions feel free to ask.
Hi carl_m1968,
Thanks for the reply and diagram.
-. Do you of any Relay board, that has all of this? something that looks like this or so... with all the components you've mentioned.
Hi carl_m1968,
Thanks for the reply and diagram.-. Do you of any Relay board, that has all of this? something that looks like this or so... with all the components you've mentioned.
Do these meet the requirements I specified? To me it looks like the control signal is only 5 volts since that is the coil voltage for those relays. Yes they do have the diode and such but again the coil must be able to handle 24 volts and the contacts must be able to hand 5 amps minimum. If you can source one of these that is controlled by 24 volts then it would work.
Another option that would do away with the need for the diode would be a solid state relay that is DC controlled at 24 volts and still able to handle 5 amps minimum at 15 volts DC on the switched side. Solid state relays do not generate back EMF so there is no need for the protection diode.
Here is a relay board that would work for your application.
https://www.grainger.com/product/4WAP6? … adType^PLA
Here is a solid state relay that would work for your application.
http://www.newark.com/crydom/dc60s3/sol … 0001264452
Hi carl_m1968,
Thank you for the Links.
-. I did not mean the very exact board in the pictures, but something like that (a board with all the components). Wanted a board to use directly. The links you sent me are what I meant when I asked for, if you know of a relay board that would work/do the same. Thank you.
-. For both boards you've linked: (1) the SSR (Solid State Relay) (2) the Fiber Glass Relay, what would the circuit diagram look like? (the Wiring).
Hi carl_m1968,
Thank you for the Links.
-. I did not mean the very exact board in the pictures, but something like that (a board with all the components). Wanted a board to use directly. The links you sent me are what I meant when I asked for, if you know of a relay board that would work/do the same. Thank you.
-. For both boards you've linked: (1) the SSR (Solid State Relay) (2) the Fiber Glass Relay, what would the circuit diagram look like? (the Wiring).
If you look at the actual devices I linked it should be easy to figure out how to connect them. But here goes. For the relay board there are six connections and they are marked on the right side NO, NC, C, and -NEG. On the left side they are marked NO, NC, C, and +POS. ON all relays NO means Normally Open. NC means Normally Closed. C means Common. These three connections are all in regards to the contacts or switched section of the relay. The NEG and POS refer to the coil which in this is polarized and the connection polarity is critical. Not all relay coils are polarized but this one is. So looking at my diagram again and putting this board in place of the relay your connections would be as follows.
Control signal from controller to POS+
Ground or negative from controller to NEG-
All fans and motors + to the NO on only one side of the board.
Positive from 12 volt supply to C on the same side of the board that fans and motors are connected to.
You will ignore the C, NC, NO connections on one side of the board.
For the Solid State relay, the connections are numbered and the control side is marked input while the switched side is marked output. So I will use numbers here as well and this is the case on most SSR's. I will go ahead and give you the correct connections BUT I just noticed this relay is rated at a 3 amp load and that is not going to be enough so we will need to source one that can handle 5 amps.
SSR1 will be the Positive from your 12 volt supply.
SSR2 will be the positive from all fans and motors.
SSR3 will be the output from your controller.
SSR4 will be the ground from your controller.
I am not able to source a Solid State Relay at this time with the correct current rating, so just go with the relay board. It will work just as well.
Im thinking to pickup an Interface Relay Module (DIN Rail), for the application. Could you suggestion one from this website, which is easier to place order in Singapore?
https://sg.rs-online.com/web/p/interfac … s/1348714/
Will the above one do the job?
There are some changes in the setup; See below:
1. the IO Card Specs:
2. The power supply to the Fans, Stall board is 12V,6A.
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